Alarm-clock switch



1643,843 Sept' 27 1927- .14. G. GOODHUE ET A1.

ALARM CLOCK SWITCH Filed Jan. 3, 1925.

Patented Sept. 27, 1927.

N i r ortieso JULAN Gi. GOOIDHUE, F EVANSTON, AND HERBERT J'. SAUVAGE, 01E ClBlllCAfit, mil@ d', .dSIGNORS TO ELECTRO THERMSTATIC CGNTRCL COMPANY, Oli' CHCCAG',

ELLNIS, A. COMMGN-LAW TRUST.

ALARM-GLCCK SWITCH.

lapplication filed January 3, i925. Serial No. 35E.

lrlhis invention relates to an alarm clock control switch; the main objects of the invention are te provide a clock operated switch by means of which a circuit, such as a regulator circuit of a furnace control device may be rendered inoperative for a certain period of time, and may then be made operative at a predetermined time; to provide a switch which can be mounted on the alarml windin stem of an ordinary alarm clock; to provlde a switch which is moved to the on-position by the clock mechanism when the alarm is released, and which may be manually moved to the off-position by l5 rotating the alarm stem on re-winding the alarm.

An illustrative embodiment of this invention is shown in the drawings in which:

Figure 1 is an elevation of the regulator' device in which the alarm clock and switch are incorporated.

Fi 2 is a diagrammatic illustration of cirznts in which the alarm clock switch is use Fig. 3 shows the switch and is taken on line 3 3 of Fig. 1.

Fig. 4 is a detailed section on-the line 4 4 of Fig. 3.

v In this invention a lever is secured to the so handle of the alarm winding stems, and two stops are provided whichI limit the movement of the lever in either direction so that the alarm is wound and unwound the same amount at each oieration. A mercury bulbV switch is mounte in the lever so that it is tilted from the on-position when the alarm is set, to the of position when the alarm is released.

- Since the clock mechanism is well-known,- it is not shown in detail herein, but it is understood that the alarm winding stem operates in the usual manner, that is, the stem is rotated counter-clockwise to wind the alarm spring and is held in such position by a stop arrangement which is released b the alarm set mechanism in the clock. en the alarm isV released,`the stem then rotates clockwise as the alarm runs down.

Referring to Fig. 2, roomY thermostat switch 1 is in series with the alarm clock 5o switch 2 in a circuit which controls the heating coil 4 and the solenoid 5 which are edsctive for operating the damper control lever 15 shown in Fig. i, which 1s pivoted in the housing 14. The switch bulb 3, shown in Fig. 2, is for controlling the furnace circuit and is operated by the solenoid 5;

As shown in Fig. 3, the clock 29 is @really mounted in the instrument housing and the, alarm winding stem 3l, the time winding eo stem 32, and the regulating lever 33 are shown projecting from the back of the clock. The lever 30 is mounted on the handle ci the alarm winding stem 3l and the lower end ofthe lever moves between the dried es stops which are shown mounted on the casing of the control instruments. At the upper end of the lever and close to the axis of the stem is secured the mercury switch 2.

In the position shown in full lines, the alarm has been released and the switch is closed. Y This is the position for daytime operation in such a circuit as shown in Fi 2 wherein the clock switch is in series wit the room thermostat switch. 75

Atnight, or when it is desired to sto thel operation of the furnace for a pre ete mined period, the handle 30 is rotated to the position shown in dotted lines. This tilts the mercury bulb switchtube to the left and so opens the' circuit to the room thermostat 1 and renders the room thermostat ineective. The alarm is then set in the usual manner so that it is released at the time when it is desired to refstartthe furnace. l

It will now be seen that a very. simple and ractical form of clock control switch` is provided. The switch can be mounted on an ordinary alarm clock and controlled by the alarm setting mechanism. The switch does 90 not in any manner interfere with the operation of the clock since a very slight effort is required to tilt the switch from one position to the other. i

While but one specific embodiment of this f invention has been herein shown and de scribed, it will be understood that numerous details of the construction shown mav be altered or omitted without dParting from control switch mounted on said stem, and y. the spirit of this invention as elined by the stops for limiting the rotation of said stem 1d' following claim. to an arc suicient to tilt said bulb switch We claim: from on to off position. In combination, a device ofthe class deySigned at Chicago this 29th d ay of Described, an alarm clock having an alarm cember, 1924. winding stem which rotates when the alarm JULIAN G. GOODHUE. is released for unwinding, a mercury bulb l f HERBERT J. SAUVAGE. 

